This isn’t the first time Bono has written in the name of food. In the nineties, he contributed to The Sinatra Celebrity Cookbook: Barbara, Frank and Friends. If we recall correctly, his recipe was an egg dish.
At this point, the recipe that Bono has contributed to the Clinton cookbook is unknown. We cannot imagine what it is, because we know from his wife that he can’t cook (see Bono Did Pork).